diff --git a/homeassistant/components/sensor/fail2ban.py b/homeassistant/components/sensor/fail2ban.py
index 6080ce9fd10..78b11b1942b 100644
--- a/homeassistant/components/sensor/fail2ban.py
+++ b/homeassistant/components/sensor/fail2ban.py
@@ -64,7 +64,7 @@ class BanSensor(Entity):
         self.last_ban = None
         self.log_parser = log_parser
         self.log_parser.ip_regex[self.jail] = re.compile(
-            r"\[{}\].(Ban|Unban) ([\w+\.]{{3,}})".format(re.escape(self.jail))
+            r"\[{}\]\s*(Ban|Unban) (.*)".format(re.escape(self.jail))
         )
         _LOGGER.debug("Setting up jail %s", self.jail)
 
diff --git a/tests/components/sensor/test_fail2ban.py b/tests/components/sensor/test_fail2ban.py
index a48b7027725..e7874765950 100644
--- a/tests/components/sensor/test_fail2ban.py
+++ b/tests/components/sensor/test_fail2ban.py
@@ -19,6 +19,10 @@ def fake_log(log_key):
             '2017-01-01 12:23:35 fail2ban.actions [111]: '
             'NOTICE [jail_one] Ban 111.111.111.111'
         ),
+        'ipv6_ban': (
+             '2017-01-01 12:23:35 fail2ban.actions [111]: '
+             'NOTICE [jail_one] Ban 2607:f0d0:1002:51::4'
+         ),
         'multi_ban': (
             '2017-01-01 12:23:35 fail2ban.actions [111]: '
             'NOTICE [jail_one] Ban 111.111.111.111\n'
@@ -112,6 +116,23 @@ class TestBanSensor(unittest.TestCase):
         assert \
             sensor.state_attributes[STATE_ALL_BANS] == ['111.111.111.111']
 
+    def test_ipv6_ban(self):
+        """Test that log is parsed correctly for IPV6 bans."""
+        log_parser = BanLogParser(timedelta(seconds=-1), '/tmp')
+        sensor = BanSensor('fail2ban', 'jail_one', log_parser)
+        assert sensor.name == 'fail2ban jail_one'
+        mock_fh = MockOpen(read_data=fake_log('ipv6_ban'))
+        with patch('homeassistant.components.sensor.fail2ban.open', mock_fh,
+                   create=True):
+            sensor.update()
+
+        assert sensor.state == '2607:f0d0:1002:51::4'
+        assert \
+            sensor.state_attributes[STATE_CURRENT_BANS] == \
+            ['2607:f0d0:1002:51::4']
+        assert \
+            sensor.state_attributes[STATE_ALL_BANS] == ['2607:f0d0:1002:51::4']
+
     def test_multiple_ban(self):
         """Test that log is parsed correctly for multiple ban."""
         log_parser = BanLogParser('/tmp')